اثر آنی کفی حمایت کننده قوس طولی- داخلی بر زوایای کاپلینگ بین مفاصل طی راه رفتن در کودکان دارای کف پای صاف

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار بیومکانیک ورزشی، دانشکده روانشناسی و علوم تربیتی، دانشگاه محقق اردبیلی، اردبیل، ایران

2 دانشجوی کارشناسی ارشد بیومکانیک ورزشی، دانشگاه محقق اردبیلی، اردبیل، ایران.

3 استادیار بیومکانیک ورزشی، دانشکده ادبیات و علوم انسانی، دانشگاه آزاد اسلامی، واحد همدان، همدان، ایران.

چکیده

مقدمه و اهداف
افراد دارای کف پای صاف دچار اختلالات حسی-حرکتی هستند که بر روی هماهنگی مفاصل اندام تحتانی اثر می­گذارد. هدف مطالعه حاضر مقایسه زوایای کاپلینگ بین مفاصل اندام تحتانی در طی راه رفتن با و بدون کفی حمایت­کننده قوس طولی-داخلی پا در کودکان دارای کف پای صاف منعطف بود.
مواد و روش ­ها
15 کودک پسر (سن: 5/1±3/10 سال) دارای کف پای صاف منعطف با اجازه والدین خود داوطلب شدند تا در پژوهش حاضر شرکت نمایند. داده­های کینماتیکی سه­بعدی طی راه رفتن با و بدون کفی ثبت گردید. زوایای کاپلینگ بین مفاصل با استفاده از روش وکتور کدینگ مورد محاسبه قرار گرفت. جهت تحلیل آماری از آزمون t همبسته استفاده شد. سطح معناداری برابر 05/0 قرار گرفت.
یافته­ ها
نتایج پژوهش حاضر اختلاف معناداری را در میانگین زوایای کاپلینگ مفاصل مچ پا و زانو طی فاز پاسخ بارگیری بین دو شرایط با و بدون ارتز در سطح سجیتال (002/0=P) و فرونتال (035/0=P) نشان داد؛ در حالی که نتایج نشان داد که ارتز پا میزان زاویه کاپلینگ بین زانو-ران در صفحه هوریزنتال را طی فازهای پاسخ­های بارگیری (008/0=P)، میانه استقرار (009/0=P) و هل دادن (001/0>P) راه رفتن افزایش می­دهد. به علاوه، زاویه کاپلینگ بین مفاصل مچ پا و ران در صفحه هوریزنتال در طی شرایط راه رفتن با ارتز  در دو فاز پاسخ بارگیری و میانه استقرار به طور معناداری افزایش پیدا نمود (05/0>P).
نتیجه­ گیری
در شرایط استفاده از ارتز میزان فلکشن زانو بیشتر از حرکت موجود در صفحه سجیتال مفصل مچ پا است که می­توان بیان نمود که کفی مورد استفاده در این مورد اثرات مثبتی را در جهت کاهش نرخ بروز آسیب دارا بوده است. ارتز مورد استفاده در پژوهش حاضر در کودکان پسر دارای کف پای صاف بیشترین تغییرات در زوایای کاپلینگ بین مفصلی اندام تحتانی را در طی فاز پاسخ بارگیری ایجاد نمود. با این وجود، اثبات این امر نیاز به انجام پژوهش­های بیشتر دارد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Immediate Effect of Arch Support Foot Orthoses on Lower Limb Intera-Joint Coupling Angles during Walking in Children with Flat Foot

نویسندگان [English]

  • AmirAli Jafarnezhadgero 1
  • Seyed Mijid Alavi Mehr 2
  • Mahdi Majlesi 3
1 Department of Physical Education and Sport Science, Faculty of Education and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran
2 Department of Physical Education and Sport Sciences, Faculty of Educational Science and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran.
3 Department of Sport Biomechanics, Faculty of Humanities, Islamic Azad University, Hamedan Branch, Hamedan, Iran.
چکیده [English]

Background and Aims: Individuals with flat foot may have sensorimotor impairments that affect coordination at the lower limb joints. The purpose of the present study was to compare joint coupling angles of the lower limbs during walking with and without arch support foot orthoses in children with flexible flat foot.
Materials and Methods: A total of 15 male teenagers (age: 10.3±1.5 year) with flexible flat foot, after obtaining their parents’ permission, volunteered to participate in the study. Three-dimensional kinematic data were collected while subjects walk with and without arch support foot orthoses. The intra-joint coupling angles were calculated using a vector coding technique. Paired sample t-test was used for statistical analysis. Alpha level was set at PResults: The results demonstrated that there are significant differences in ankle-knee intra-joint coupling angles in both sagittal (P=0.002) and frontal (P=0.035) planes between the control and experimental groups during loading response phase, while the results also demonstrated that foot orthotic device reduce horizontal knee–hip coupling angle significantly during loading response (P=0.008), mid stance (P=0.009), and push off (P<0.001) phases of walking. Moreover, horizontal ankle-hip coupling angle significantly increased during foot orthoses condition in both loading response and midstanc phases (P<0.05).
Conclusions: During orthoses condition, knee flexion angle was greater than that of sagittal ankle joint motion. This indicated positive effects of orthoses in injury prevention. The arch support foot orthoses that was used in the present study in male children with flat foot caused the highest alterations in lower limb intra-joint coupling angles in loading response phase. However, further study is needed to prove thie claim.

کلیدواژه‌ها [English]

  • Vector Coding
  • Flat foot: Foot Orthoses: Lower Limb
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